1.  Questions : How is the girl in the photograph related to Kunal ?
Statements :

I.   Pointing to the photograph, Kunal said, "She is the mother of my father's only grand-daughter".
II.  Kunal has no siblings.
III. Pointing to the photograph, Kunal said, "She is the only daughter-in-law of my mother."

A. Any two of the three
B. Only I and II
C. Only II and III
D. Either only III or only I and III
E. None of these

Answer: Option D

Explanation:

From I, we conclude that the girl is either Kunal's or his brother's wife. But, according to II, Kunal has no siblings.

So, from both I and II, we conclude that the girl is Kunal's wife.

From III, we find that the girl is the only daughter-in -law of Kunal's mother i. e. she is Kunal's wife.